66 dart parts. Early A

The glass itself is the same L or R As Lee says. To use a L side glass in the R side or vise versa you have to remove the base mechanism stuck to it (not mechanically fastened to the glass) and replace it with the Passenger side base mount/holder assembly. So if someone broke your window out and the attaching base is still there Lee's L door glass will fix your car. If someone removed your R window and that mounting base is gone (they typically come out together) you'd still need to find it after buying a L hand replacement window. Any glass shop can easily reset the glass into the mounting baseplate.